Rare earth improving antibacterial performance silver containing stainless steel

A stainless steel and rare earth technology, applied in the field of antibacterial stainless steel, can solve problems such as difficult operation, achieve long-lasting antibacterial performance, good mechanical properties and corrosion resistance, and a wide range of antibacterial effects

Inactive Publication Date: 2007-04-18
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to the method described in this patent, it is difficult to operate, and it may not be possible to ensure that the silver is evenly distributed in the stainless steel matrix

Method used

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  • Rare earth improving antibacterial performance silver containing stainless steel
  • Rare earth improving antibacterial performance silver containing stainless steel
  • Rare earth improving antibacterial performance silver containing stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The steelmaking raw materials with the composition ratio shown in Table 1 were smelted in a vacuum induction furnace to obtain silver-containing austenitic stainless steel castings with a diameter of Φ50mm and different compositions. test.

[0025] (1) Electron probe micro-area composition distribution analysis and scanning electron microscope silver and rare earth element precipitate phase observation and XDS energy spectrum analysis

[0026] The silver-containing antibacterial stainless steel test piece with A4 composition added with rare earth element cerium in Table 1 is ground and polished by a metallographic grinder to make a polished sample. The distribution of cerium and silver elements was tested. It can be seen from the electron probe pictures that there are evenly distributed microscopic regions rich in rare earth elements cerium and silver elements in the stainless steel matrix. The pictures of scanning electron microscope and electron probe are shown in at...

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Abstract

A kind of argental non-corrosive steel which can improve antisepsis with rare-earth is disclosed. It contains 0.05-1.0% rare-earth element, 0.005-0.5% silver, 13-30% Cr, 0-18% Ni, C<=1.2%, Mn<=10%, one or more alloy element of Cu,Mo, Co,Ti,Nb,V,Al,Zr,B, in which Cu<=3.8%, Mo<=3.0%, Al<=1.2%, rest element<=1%, and the allowances are base Fe. The added rare-earth element and silver distributes uniformly in the base, which offers the non-corrosive steel with antisepsis property. Silver is added into the base by middle alloy of Ag-Cu or Ag-Ni. And rare-earth element is added into the base by rare-earth ferro-silicon or by affiliating rare-earth alloy properly in melting anaphase of non-corrosive steel. The non-corrosive steel has many characteristics including persistent antisepsis, extensive range of antisepsis and bacteria without bringing fastness. It also has comparative mechanical property and corrosive nature as common non-corrosive steel.

Description

Technical field: [0001] The invention relates to antibacterial stainless steel, in particular to a silver-containing stainless steel with rare earth improved antibacterial properties, which can be applied to various places that are likely to cause cross-infection of people, such as entrances and exits of public places, elevators, telephone booths, isolation railings of garbage bins, etc.; It can be used in household kitchen supplies and facilities, food industry related equipment and utensils, medical equipment and other fields. Background technique: [0002] With the development of social economy, people have more and more opportunities to communicate in public places, and the probability of being infected with various germs is also increasing. In recent years, antibacterial concepts and products have attracted more and more attention. [0003] In the late 1990s, some Japanese companies developed silver- and copper-containing antibacterial stainless steels, such as Japanes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/00C22C38/16C22C38/40C22C38/42C22C38/52C22C33/06
Inventor 敬和民吴欣强刘永前杨柯姚治铭吕曼琪王智学李莉
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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